Struct BlockWriter 

pub struct BlockWriter<'a> { /* private fields */ }

Splits a byte buffer into sub-block segments — used by the download client and the upload server.

Pull BlockWriter::next_segment until it yields None; if BlockWriter::is_done then send the BlockWriter::end_frame, otherwise transmit the sub-block, await the acknowledgement, call BlockWriter::start_sub_block with the next blksize, and repeat.

Implementations

impl<'a> BlockWriter<'a>

pub fn new(data: &'a [u8], blksize: u8) -> Self

Start splitting data using the negotiated first blksize.

pub const fn is_done(&self) -> bool

Whether every byte has been emitted (then send Self::end_frame).

pub fn next_segment(&mut self) -> Option<SdoPayload>

The next segment of the current sub-block, or None when the sub-block is full or the data is exhausted (disambiguate with Self::is_done).

pub fn start_sub_block(&mut self, blksize: u8)

Begin the next sub-block after an acknowledgement, using blksize.

pub fn end_frame(&self, crc_support: bool) -> SdoPayload

The end frame: the CRC over all data (when crc_support) and the count of unused bytes in the last segment.

Trait Implementations

impl<'a> Debug for BlockWriter<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.